5W0K

Crystal structure of EBV gHgL/CL40/gp42 N-domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.299 
  • R-Value Work: 0.242 
  • R-Value Observed: 0.244 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Inhibition of EBV-mediated membrane fusion by anti-gHgL antibodies.

Sathiyamoorthy, K.Jiang, J.Mohl, B.S.Chen, J.Zhou, Z.H.Longnecker, R.Jardetzky, T.S.

(2017) Proc Natl Acad Sci U S A 114: E8703-E8710

  • DOI: 10.1073/pnas.1704661114
  • Primary Citation of Related Structures:  
    5W0K

  • PubMed Abstract: 
  • Herpesvirus entry into cells requires the coordinated action of multiple virus envelope glycoproteins, including gH, gL, and gB. For EBV, the gp42 protein assembles into complexes with gHgL heterodimers and binds HLA class II to activate gB-mediated ...

    Herpesvirus entry into cells requires the coordinated action of multiple virus envelope glycoproteins, including gH, gL, and gB. For EBV, the gp42 protein assembles into complexes with gHgL heterodimers and binds HLA class II to activate gB-mediated membrane fusion with B cells. EBV tropism is dictated by gp42 levels in the virion, as it inhibits entry into epithelial cells while promoting entry into B cells. The gHgL and gB proteins are targets of neutralizing antibodies and potential candidates for subunit vaccine development, but our understanding of their neutralizing epitopes and the mechanisms of inhibition remain relatively unexplored. Here we studied the structures and mechanisms of two anti-gHgL antibodies, CL40 and CL59, that block membrane fusion with both B cells and epithelial cells. We determined the structures of the CL40 and CL59 complexes with gHgL using X-ray crystallography and EM to identify their epitope locations. CL59 binds to the C-terminal domain IV of gH, while CL40 binds to a site occupied by the gp42 receptor binding domain. CL40 binding to gHgL/gp42 complexes is not blocked by gp42 and does not interfere with gp42 binding to HLA class II, indicating that its ability to block membrane fusion with B cells represents a defect in gB activation. These data indicate that anti-gHgL neutralizing antibodies can block gHgL-mediated activation of gB through different surface epitopes and mechanisms.


    Organizational Affiliation

    Department of Structural Biology, Stanford University School of Medicine, Stanford, CA 94305; tjardetz@stanford.edu.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Envelope glycoprotein HA, C660Human herpesvirus 4 strain B95-8Mutation(s): 0 
Gene Names: gHBXLF2
Find proteins for P03231 (Epstein-Barr virus (strain B95-8))
Explore P03231 
Go to UniProtKB:  P03231
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Envelope glycoprotein LB, D114Human herpesvirus 4 strain B95-8Mutation(s): 0 
Gene Names: gLBKRF2
Find proteins for P03212 (Epstein-Barr virus (strain B95-8))
Explore P03212 
Go to UniProtKB:  P03212
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
CL40 IgG heavy chainE, H217Mus musculusMutation(s): 0 
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  • Reference Sequence
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
CL40 IgG light chainF, L213Mus musculusMutation(s): 0 
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  • Reference Sequence
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
Glycoprotein 42X, Y35Human herpesvirus 4 strain B95-8Mutation(s): 0 
Gene Names: BZLF2
Find proteins for P03205 (Epstein-Barr virus (strain B95-8))
Explore P03205 
Go to UniProtKB:  P03205
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.299 
  • R-Value Work: 0.242 
  • R-Value Observed: 0.244 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 96.38α = 90
b = 133.13β = 90
c = 254.13γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
PHASERphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United StatesAI119480
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United StatesAI076183
National Institutes of Health/National Cancer Institute (NIH/NCI)United StatesCA117794

Revision History 

  • Version 1.0: 2017-10-04
    Type: Initial release
  • Version 1.1: 2017-11-08
    Changes: Database references
  • Version 1.2: 2019-12-04
    Changes: Author supporting evidence